PMID- 24597471 OWN - NLM STAT- MEDLINE DCOM- 20141203 LR - 20231110 IS - 1365-2222 (Electronic) IS - 0954-7894 (Print) IS - 0954-7894 (Linking) VI - 44 IP - 5 DP - 2014 TI - Increased local IgE production induced by common aeroallergens and phenotypic alteration of mast cells in Chinese eosinophilic, but not non-eosinophilic, chronic rhinosinusitis with nasal polyps. PG - 690-700 LID - 10.1111/cea.12304 [doi] AB - BACKGROUND: Eosinophilic and non-eosinophilic chronic rhinosinusitis with nasal polyps (CRSwNP) display distinct patterns of inflammation. However, the pathogenic mechanisms underlying the heterogeneity of CRSwNP need further investigation. OBJECTIVE: To investigate local immunoglobulin E (IgE) production and phenotype of mast cells in eosinophilic and non-eosinophilic CRSwNP in Chinese. METHODS: Total and specific IgE levels were analysed by means of the ImmunoCAP system. The molecular steps involved in class-switch recombination to IgE were investigated using RT-PCR assays. Mast cell phenotypes, IgE- and high-affinity IgE receptor (FcepsilonRI)-positive cells, and allergen binding to specific IgE in sinonasal mucosa were determined by means of immunohistochemistry. RESULTS: Compared with controls and non-eosinophilic CRSwNP, local total IgE levels were increased, and local specific IgE to common aeroallergens was more frequently found, in Chinese eosinophilic CRSwNP independent of atopy and without significant association with Staphylococcus aureus enterotoxins. The epsilon germline gene transcript was also more frequently detected in eosinophilic CRSwNP. The number of IgE- and FcepsilonRI-positive cells was increased in eosinophilic CRSwNP. Most IgE- and FcepsilonRI-positive cells were mast cells. Dust mite antigens could bind to IgE on mast cells in situ. The number of mast cells positive for both tryptase and chymase and activated mast cells was increased in eosinophilic CRSwNP and the number of activated mast cells positively correlated with local IgE level, eotaxin-1 level, and eosinophil count in CRSwNP. CONCLUSIONS AND CLINICAL RELEVANCE: The local IgE induced by common aeroallergens may mediate mast cell activation and contribute to subsequent eosinophilic inflammation in Chinese CRSwNP. This study offers a rationale for considering intervention strategies designed to target 'local allergy' in eosinophilic CRSwNP. CI - (c) 2014 John Wiley & Sons Ltd. FAU - Cao, P-P AU - Cao PP AD - Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. FAU - Zhang, Y-N AU - Zhang YN FAU - Liao, B AU - Liao B FAU - Ma, J AU - Ma J FAU - Wang, B-F AU - Wang BF FAU - Wang, H AU - Wang H FAU - Zeng, M AU - Zeng M FAU - Liu, W-H AU - Liu WH FAU - Schleimer, R P AU - Schleimer RP FAU - Liu, Z AU - Liu Z LA - eng GR - P01 AI106683/AI/NIAID NIH HHS/United States GR - R01 HL078860/HL/NHLBI NIH HHS/United States GR - R37HL068546/HL/NHLBI NIH HHS/United States GR - R37 HL068546/HL/NHLBI NIH HHS/United States GR - R01HL078860/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - England TA - Clin Exp Allergy JT - Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology JID - 8906443 RN - 0 (Air Pollutants) RN - 0 (Allergens) RN - 0 (Antigens) RN - 0 (CD40 Antigens) RN - 0 (Cytokines) RN - 0 (RNA, Messenger) RN - 0 (Receptors, IgE) RN - 147205-72-9 (CD40 Ligand) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Adolescent MH - Adult MH - Air Pollutants/immunology MH - Allergens/*immunology MH - Antigens/immunology MH - Asian People MH - B-Lymphocyte Subsets/immunology/metabolism MH - CD40 Antigens/metabolism MH - CD40 Ligand/metabolism MH - Chemotaxis, Leukocyte/immunology MH - China MH - Chronic Disease MH - Cytokines/metabolism MH - Eosinophilia/genetics/*immunology/metabolism MH - Female MH - Gene Expression Regulation MH - Humans MH - Immunoglobulin E/*immunology MH - Leukocyte Count MH - Male MH - Mast Cells/*immunology/metabolism MH - Middle Aged MH - Nasal Polyps/complications MH - Phenotype MH - Protein Binding/immunology MH - RNA, Messenger/genetics/metabolism MH - Receptors, IgE/metabolism MH - Rhinitis/complications/diagnosis/genetics/*immunology MH - Sinusitis/complications/diagnosis/genetics/*immunology MH - Th2 Cells/immunology/metabolism MH - Young Adult PMC - PMC4013492 MID - NIHMS573601 OTO - NOTNLM OT - chronic rhinosinusitis OT - eosinophil OT - immunoglobulin E OT - mast cell OT - nasal polyps EDAT- 2014/03/07 06:00 MHDA- 2014/12/15 06:00 PMCR- 2015/05/01 CRDT- 2014/03/07 06:00 PHST- 2013/11/20 00:00 [received] PHST- 2014/02/24 00:00 [revised] PHST- 2014/02/24 00:00 [accepted] PHST- 2014/03/07 06:00 [entrez] PHST- 2014/03/07 06:00 [pubmed] PHST- 2014/12/15 06:00 [medline] PHST- 2015/05/01 00:00 [pmc-release] AID - 10.1111/cea.12304 [doi] PST - ppublish SO - Clin Exp Allergy. 2014;44(5):690-700. doi: 10.1111/cea.12304.